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A081102 First n digits of Log_10 2 after the decimal point are primes. 0
1, 64, 1126, 1653 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..3.

EXAMPLE

1 is listed because 3 is prime but 5 is not listed because 30102 is not prime.

MATHEMATICA

Do[ If[ PrimeQ[ FromDigits[ RealDigits[ N[ Log[10, 2], n + 10], 10, n] [ [1] ] ] ], Print[n] ], {n, 1, 10000} ]

CROSSREFS

Sequence in context: A191494 A269000 A189276 * A250171 A128987 A240788

Adjacent sequences:  A081099 A081100 A081101 * A081103 A081104 A081105

KEYWORD

nonn,base,more

AUTHOR

John Sillcox (JMS21187(AT)aol.com), Apr 15 2003

STATUS

approved

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Last modified March 23 13:17 EDT 2019. Contains 321430 sequences. (Running on oeis4.)